GB457632A - Table roll structure for paper machines - Google Patents

Abstract

457,632. Fourdrinier paper - making machines. MARRIOTT, H. L., 103, Kingsway, London.-(Beloit Iron Works ; 815, 2nd Street, Beloit, Wisconsin, U.S.A.) Feb. 26, 1936, No. 5820. [Class 96] The table rolls 15 of a Fourdrinier paper - making machine have supports over the greater part of their length, e.g. shells 24 open at the top, which extend under and partly around the rolls 15. Each shell 24 is welded, brazed, &c. to the top of a supporting bar 25 having a channel 30 braced at intervals by cores 33, and fed with water &c. under pressure, which flows through openings 34 in the shell 24 to lubricate and assist in supporting the roll 15. The bars 25 rest in grooves 29 in a sleeve 26 on a tie-bolt 27 passing through the walls of a group, e.g. of 10 rolls &c. The rolls 15 may be 1-6 inches in diameter and may be of wood, phenolic resin products, vulcanized rubber, &c. and may have a metal core, or may be of metal, and be solid or hollow. The shells 24 may be of brass, bronze, nitrided steel, &c., and may be chromium-plated, or they may be of wood, resinous compositions, rubber, &c. The rolls 15 may be driven by the wire-cloth 10, or be coupled with drive shafts by rubber tubes, e.g. vulcanized on and may rotate at, e.g. 10,000 r.p.m., e.g. at the same surface speed as the wire-cloth 10. Each group of rolls may be driven through trains of cogs by a separate electric motor energized from a generator coupled to the couch roll so that changes of speed of the rolls 15 correspond with those of the couch roll. Alternatively, chain or belt drive from the breast roll or couch roll may be used.